Dump rake



April 1, 1941. w J; CQULTAS Eg-AL 2,237,280

DUMP RAKE Filed May 18. 1958 '7 Sheets-Sheet l W' INVENTORS i? fi mATTORNEYS N Dm WN Duur muis' v rind nay 18, 195e' '7 sheets-'sheet 2 8360 /ZZ 3 Q0 64 a Ff@ 5 6 m W/ 55 D 45 -Z/ 44 43 jig 4 .ao $67/ 6 o 4 7/55g, .Q 63 75 so 70 .9c 00 y INVENTORS rf y fdl/7 ATTORNEYS April l,1941- J. coULTAs Erm. 2.237.280

DUMP BAKE Filed lay 18. 1938 '7 Sheets-Sheet 3 NS/ QN, uw @su bww!! SMQPll 1, 1941 w. J. couLTAs vErm. 2.237,280

DUMP RAKE Filed May 18, 1938 7 Sheets-Sheet 4 NVENT ORS ATTORNEYS 'April1, 1941- w. J. couLTAs ErAL 2.237.280

DUMP RAKE Filed lay 18, 1938 '7 Sheets-Sheet 5 i NVENTORS MM2 E. am

y w. J. couLrAs Erm. 2.237.280

April 1, 1941.

uur am:

Filed nay 18. 193e 7 Sheets-Sheet 6 Il I,

mNlrbwN ATTORNEYS April 1, '1941.`

W. J. COULTAS ETAL Duur muxa Fned'uayl 1a. 1958 'r sheets-sheet raiented Apr l, 1941 iii-Tao STATES PATENT OFFICE .DU'MI BAKE Wilbur' J.ocultas and Nolan n. Colvin, Moline,

Ill., assignors to Deere 8s Company, Moline, lll a corporation oi'Illinois Application May 18, 1938, Serial No. 208,592

32 Claims.

takeoff shaft, power lift; mechanism, or other driving member, back tosuitable dumping means carried on the dump rake body and there utilizedto dump the tooth-carrying rake head.

Another object is to provide a dump rake having two or more wheelsupported rake sections which are connected to a tractor by means of acommon draft frame and which are dumped by .suitable dumping meanscarried on the draft frame and operated by power derived from thetractor engine.

Another object is to provide a dump rake hav= ing two or more rakesections, each section of which is provided with dumping mechanism forldumping its respective rake head, together withv means for transmittingpower from the tractor engine to each of the dumping mechanisms and`control means for actuating the same.

'Another object is to provide a dump rake hav ing at least two rakesections enabling it to opcrate upon a wide swath and thereby utilizingthe power of the propelling tractor to its fullest capacity.

These and other objects and advantages of- Figure 3 is a side elevationof the implement shown in Figure l, the near wheel ofthe tractor .beingremoved for a clearer showing of certain details;

Figure 4 is a sectional viewtaken along the line l-l of Figure 2;

Figure 51s a plan view of another embodiment of the two-section rake, inwhich power is transmitted back from the power' takeoi shaft to driveindividual dumping mechanisms carried on each of the rake sections; 'v

Figure 6 is an enlargedplan view of the dumping mechanism on one of therake sections shown in Figure 5, showing the clutch engaged, as at thebeginning of the dumping operation:

Figure 'I is a. view similar to Figure 6, showing the clutch disengaged,as when the rake head is in normal raking position;

Figure 8 is a sectional side view, taken along the line 8-8 of Fignre 5,and drawn to an enlarged scale;

Figure 9 is a plan view of a single-section rake in which power istransmitted. 4baci; from the power lift mechanism to operate dumpingmechanism of the self-interrupting clutch type mounted on the rake body;

Figurev 10 is a plan view of a portion of a rake similar to. that shownin Figure 9, illustrating a modified form of the dumping mechanism;

Figure 11 is an enlarged sectional view taken substantially along theline ii-ii of Figure l0 and having portions broken out in order toconserve space on the sheet;

Figure 12 is a rear view of a portion of the tractor power liftmechanism and device for interrupting the transmission of. power, astaken along the line l2-i2 of Figure 11;

Figure 13 is a plan view of another embodi'- ment, similar to that shownin Figure 10, of a dump rake having power lift operated dumpingmechanism, with the device for interrupting the transmission of powermounted on the rake body:

Figure 14 is an enlarged sectional view, taken along the line N--M ofFigure 13, and broken out in portions to save space on the sheet; andFigure l5 is a detailed sectional view, taken along the line lE-IB ofFigure 14.

Referring now to the drawings and more particularly to Figures 1-4inclusive, the reference numeral 2Q indicates a tractor of the typehaving a rearl axle L22 journaled in a transverse axle housingzl, andtraction wheels 23 mounted on the ends of the axle 22. The axle housing2| is provided withv two pairs of rearwardly facing im plement mountingbosses 26 which are disposed symmetrically on oppositesides of themidpoint o' the axle housingand are adapted to receive complementarymounting brackets such as `angle` brackets 25 and in flhe dump rakeitself comprises a pair of rake sections 29,' 3o which are disposedtothe rear of the tractor 23 and transversely thereof, and are connectedto the tractor body by means of a draft frame 3|. The rake sections 23,33 are of conventional design, each comprising a frame 32 to which atooth-carrying rake head is pivotally connected for swinging betweenraking and dumping positions. The frame 32 preferably comprises frontand rear transverse bars 34, 35 and a longitudinal connecting bar 33disposed intermediate the ends thereof. 'I'he end portions of the frontbar 34 are bent back so that they diverge rearwardly and are connectedwith the re'ar bar 35. Also connecting the front and rear bars at apoint somewhat to one side of the bar 36 is an angle bar 43 having a,vertical flange to which a transport hook 4| is pivotally connected at42. and preferably comprises a transverse angle iron beam 33 which ispivotally supported on brackets 43 that are secured to the rear bar 35at laterally spaced intervals and project rearwardly therefrom. lTherake head 33 carries the usual rake teeth 44 which are secured to theunder side of its horizontal flange and curve rearwardly and downwardlytherefrom to Within close proximity of the ground in raking position.The outer end of each of the rake heads 33 is.provided with a stub shaft45 upon which is journaled a crank axle 46, while the lower end of thecrank axle 46 is bent laterally outward to provide a bearing upon whichthe carrying wheel 53 is journaled. The crank axle 46 is held verticalby a brace rod 5| which 1s fastened at one end to the rear frame bar 35and connected at the other endY to a lug provided on the crank axle 45.l

The draft frame 3| preferably comprises a transverse channel iron beam52 disposed across the front of the two rake sections 23, 33 andextending somewhat beyond the midpoints thereof. .'Ihe front ends of theconnecting bars 33 are xed to the beam 52. Draft bars 53 and 54,

fixed to the respective rear bars 35 of sections 23 and 33, extendforwardly in converging relation and are pivotally connected to anglebrackets 23 by transverse pivot bolts 55. 'I'he channel iron The rakehead is of conventional design,-

beam 52 is braced in its middle portion by two ends of the rake sections23, 33 and also serves to stabilize the same, holding them in transversealignment relative to the tractor 23. The draft frame 53 preferablycomprises ltwo pairs of bealns 6|, 62 which are ilxed together at their.forward ends and pivotally connected to` the angle brackets 23 by pivotbolts 33. The lower pair of beams 3| converges rearwardly, passing underbeam 52 with a liberal clearance. and is Joined, as by welding, to the-lower end" of a vertically disposed angle iron post 34 arrangedslightly to the rear of beam 52. 'Ihe upper pair of beams 32 alsoconverges rearwardly, extending diagonally upward and ioining the upperend of the post 34 to which the beams are likewise fixed.

A beam 35 extends rearwardly fromI the lower of a wheel post'1l, and'the latter is swiveled ina vertical sleeve 12 carried by the draftframe 33 immediately ahead of the post 34.

`Each of the rake head beams 33 is provided at its inner .end with aball-ended stub shaft `13 which is disposed coaxially with the rakeheadbeam and projects laterally beyond the end thereof. The rear end ofthe beam 65 is also provided with a complementary socket member 14adapted to receive the bali portions of each of the shafts 13, forming aball and socket connection between the beam 35 and either rake head 33.Thus, each of the rake heads 33 is supported at its opposite ends oncarrying wheels, and either rake head is free to swing verticallyrelative to the other as the carrying wheels follow irregularities inthe ground surface.

The rake head 33 is dumped by means including a transverse shaft 15which is journaled at its ends in bearings 15 carried in upright posts33 which are fixed to the ends of the beam 52. The mid portion o f theshaft 15 is supported in two bearings 3|, 32 which are spaced apartsufficiently to receive between them certain driving gear that will behereinafter described. The outer ends Vof the shaft 15 are provided withcrank arms 33, and a link 34, which is pivotally connected with thecrank, extends rearwardly to a standard 35 secured to and rising fromthe horizontal flange of the rake head 33. A 'pivot 35 connects ,therearward end of the link 34 with said standard. Thus it will be seenthat rotation of the shaft 15 and cranks 33 acts to swing the rakehead33 and attached rake teeth between dumping and raking positions. Ahand lever 33 fixed to the standard 35 permits swinging the rake head byhand when necessary, and when engaged and held down by the transporthook 4|, holds the rake head up in the raised position for transport.

The transverse shaft 15 is intermittently driven by power derived fromthe power takeoff shaft 3| which projects rearwardly from the tractorbody, and transmitted back to the shaft 15 through driving means andself-interrupting clutch means to be described hereinafter. A drivingsprocket (not shown) ilxed on the power takeoff shaft 3| operativelyengages a chain 32 which is trained over a driven sprocket 33 journaledin a suitable bearing carried on a U- shaped frame 35 which is xed tothe angle brackets 25. The chain 32 is also trained over a chaintightener sprocket 33 journaled in bearlng means adjustably supported,in any suitable manner, on the tractor drawbar |33.

From the driven sprocket 33, power is transv welding, to a supportingarm |33 extending forto the gear ||3, and a driven member ||3 which isslidably but non-rotatably mounted on the shaft 13, as by splines or thelike. The driven member ||3 is in the form of a sleeve having teethprovided at one end'adapted to cooperate with complementary teeth formedon the driving member H2, and is moved axially into and out ofengagement therewith by means of a shifting fork H4 which engages agroove |15 formed in the sleeve H3. The shifting fork Ill is pivotallysupported at ||6 on a member` |20 fixed to the arm |06, and is bentlaterally from the pivot connectionl ||6 to provide a bell crank arm|2|. A trip rope |22 is secured to the end of the arm |2| and extendsrearwardly therefrom through a pulley |23 and then forwardly to thetractor seat |24 to which it is fastened within easy reachy of theoperator. The clutch is normally held out of engagement during theraking operation by means of a spring clip |25 which is bolted to themember |20 by a bolt |26 and which engages the bell crank arm |2| tohold the'latter in a forward position.

When the operator wishes to dump the rake, he merely pulls on the triprope |22 to swing the -bell crank arm |2| rearwardly, engaging theclutch and locking the shaft with .the constantly rotating gear H0. Thecrank arms 83 fixed to the ends of the shaft 15 swing upwardly andforwardly, pulling the rake head 33 up into dumping position. Near theend of Ithe lifting movement, the clutch is disengaged by a throw-outcam |30 having a hub |3| fixed to the shaft 15 adjacent the bell crankarm i2i.

' The cam |30 contacts the latter, pushing it back to its normalposition of disengagement where it is held by the spring clip |25. Withthe disengagement of the clutch the rake head 33 is allowedl to fall bygravity to raking position. swinging the cranks 83 down to thehorizontal f rearwardly extending position shown in Figure 3, in whichthe link 84 and xcrank 83 form a dead center toggle lock for holding'the rake head 33 to its raking position. The fall of the rake head ischecked by a spring |32 which is fastened at one end to the front bar 34of the frame 32, and is connected at the other end by a short length ofchain |33 to a bracket |35 xed to the rake head beam 33. The respectivelengths-of the chain |33 and spring |32 are such that the spring isstretched through only the last few degrees of swing as the rake headdrops into raking position, thereby cushioning the shock of the descentand protecting the rake head and teeth against damage.

Another structural embodiment of the present invention is disclosed inFigures 5, 6, 7, and 8, to which reference is now directed. As in thepreviously described embodiment, the implement under considerationcomprises two rake sections |50 and |5| which are connected by meansof'a draft frame |52 to the rear of a tractor 25 and transverselythereof. Each of the rake sections |50, |5| comprises a frame |63 and atooth carrying rake head |54 journaled on said frame for swingingbetween gathering and dumping positions. The frame |53 preferablycomprises front and rear transverse bars |55, |55 connected at theirmid-points by a fore and after extending beam |60 which projectsforwardly beyond the front bar |55, and at a point somewhat to one sideof the beam i60 by two oppositely arranged angle bars iti, |62 set withtheir ver-tical anges spaced apartsufdciently to receive between themcertain parts that will be hereinafter described. The ends of the frontbar |55 are bent back so .that they divergejrearwardly and are connectedwith the rear bar |56. Further bracing and also'by a bar |64 extendingbetween members and |56 yopposite the two angle bars IGI, |62, whichisconnected with the beam by a cross bar |65. 'Ihe latter two bars |66.|65 serve primarily, however, to-support centain operating mechanism,that will be described later. I'he rake head |54 is similar to thatdescribed previously, comprising a transverse angle iron beam |66 whichis pivotally supported on brackets |1|l that are secured to the rearbar- |66 at laterally spaced intervals and project rearwardly therefrom.The rake head |54 carries a plurality of rake teeth |1| which aresecured to the horizontal flange of the angle iron beam v |66 and extendrearwardly therefrom in the usual manner. 4 r

Secured to the outer end of each of the rake head beams |66 in axialalignment with the axis of rotation thereof, is a stub axle |12, andpivotally supported thereon is a` downwardly extending crank axle |13.Acarrying wheel |18 is `iournaled on the lower end of crank axle |13 andthe latter is held vertical by a strut |15 which is connected at one endto a lug |18 provided on .the crank axle, and suitably secured at theother end to the rear bar |55.

The forward ends of the beams |60 are each provided with a generallyvertically disposed sleeve member which is fixed, as by welding, to thebeam end. The spindle portion of a caster wheel axle I8| is journaledwithin the sleeve member |80, and the carrying wheel |82 is ro-v beam|83 with liberal clearance. to' a positionj a ball and socket Jointtherebetween.

is secured by .two bracing members |63 which,

. converge forwardly from thefront bar |55 and are Joined on oppositesides with the beam |60,

tatably supported at the lowerv end oflthe caster. Wheel axle |8I.

The draft frame |52 connecting the two rake sections |50. `|5| to thetractor 20 includesa transverse channel iron beam |63 which extends'4between and is xedly secured at its ends to the forward portions ofbeams |65 immediately behind sleeve members |60. A shaft id'extends-fiforwardly from the mid-point of beam |53 to av pivotal draft connection|35 with the tractor drawbar |86, and is braced by two bracing members|00 which converge forwardly from the beam |83 and are joined. onopposite sides to the shaft |83. A secondary draft member in the form ofa channel iron beam |9| is pivotally connected at |85 to the tractordr-awbar .|85 and extends rearwardly therefrom, passing under thetransverse' between the ends of the rake lheadbearns |55. A. generallyvertical sleeve memberv |92 is i'lxed, as by welding, to the beam |88"somewhat forwardof the rear end thereof, and. journaled in said sleevemember is the spindle portion of a caster wheel axley |93 on which acarrying wheel |55 is journaled. As in the previously described' em.bodiment, the rear end portion of the beamfiii-l is provided with asocket member at |55 adaptedV to receive ball members |95 fixed at theinner' end of each of the rake head beams |56|to`form.

Each of the rake sections |55," 66| is dumped by means comprising atransverse shaft i9@ which is journaled within a sleeve bearing 25@fixed to the beam |60 midwaybetweenbars |55,

|56, and which is provided with'a. crank arm 20| fixed to one endthereof. A connectingv link 252 is pivotally connected at one 'endrlto'the crank arm 2M, and at the other end, byatransverse. pivot'bolt 203,to a bracket 205 fixed to the horizontal flange of the rake head beam|55 and :z: rising therefrom; Thus, it will readily be seen that byvrotating the crank arm 20|, the rake head |56 will be pulled upwardly bythev llnk-202 from raking to vdumping position.

ward end by a pivot 255. A link 2|5, preferably but not necessarily madeup of two parallel bars spaced apart, is pivotally connected with thefree end portion of the link 255 by a pivot 2|| and extends rearwardlyto a standard 2|2 secured to and rising from the horizontal flange ofthe rake head beam |56. A pivot 2|3 connects the rearward end of thelink 2 I 5 with said standard. Said links thus form a toggle, themembers of which are approximately aligned when the rake head is in itsoperating position shown in Figure-8, but when the rake head is swungupwardly to dump, the toggle breaks upwardly and the link 255 thereforeswings forwardly so that the toggle members then assume a position ofacute angularity with respect to each other. To prevent the togglemembers from coming to a fully aligned position or forming an overcenterlock, a stop 2|4 is provided between the vertical iianges of the bars|5i, |62 and secured thereto by a bolty 2|5 in position to intercept thefree end portion of the link 255 and prevent it from swinging backwardand downward far enough to fully align with the link 2|5.

Pivoted on this bolt 2'|5 isa locking lever 2|5 which is shaped toprovide a hook portion 225, adapted to hook over the pivot bolt 2||between links 255, 2|5 when the latter are straightened to their normaloperating position as shown in Figure 8. Thus the locking lever 2|5effectively holds the toggle links in a nearly dead center position,thereby maintaining the rake in a ground engaging position. Since thelinks are nearly aligned, very little force is exerted against themanner.` A driving chain 245 is trained over the locking hook 225,therefore only a slight pullagainst the lever 2|5 will release the hookportion 225 from the bolt 2| allowing the rake to be dumped by thedumping mechanism. The lever 2|5 is preferably held in locking positionby a spring 22| which is coiled around'the bolt 2|5 and adapted to forcethe lever 2|6 yicldingly up against the pivot bolt 2| i.

Power for driving the dumping mechanism is derived from the tractorpower take-off shaft 5| and is transmitted back to said dumpingmechanism by transmission means including a coupling member 222 which isadapted to be connected to said power take-off shaft and which isconnected to a rearwardlyextending telescoping drive shaft 223 by auniversal joint 224. The rear end of the drive shaft 223 is connected byanother universal joint 225 to a short shaft 225 journaled in thetubular portion 235 of a gear case 23| and having a bevel pinion 232provided at the rear end thereof. The gear case 23| is rigidly supportedon the cross beam |53 in anysuitable manner, while the front end of thetubular portion 235 is supported on the shaft |84 by means of an anglebracket 225 to which a.. lug 225 on the tubular portion 235 is bolted.'I'he bevel pinion 232 is engaged in driving relation with a bevel gear234 which is fixed on a short transverse shaft 233 journaled in the gearcase 23| perpendicular to shaft 235. 'Ihe ends of shaft 233 projectthrough and beyond the side walls of the gear case 23| 'and are providedwith universal joints 235 and 235 by which shaft 233 is opershafts 245,24| arelikewise provided with universal Joints 242 with which they areconnected to spindles 243 having sprockets 244 mounted thereon. Thespindle 243 is supported von 0pposite sides of the sprocket 244 'inbearings 245 which are carried'by the beam |53 in any suitable the bar|55 and over which the chain 245 is v trained.

'I'he sprocket 255 is locked to the shaft |55 to rotate the latter bymeans of a self-interrupting clutch 25| comprising a driving member 252fixed to the sprocket 255 opposite the bearing 255, and driven member253 which is slidably but non-rotatably mounted, as by splines or thelike, on shaft |98. A compression spring 254 encircles the shaft |95between the driven clutch member 253 and a retaining washer 255 which isheld in place at the end of shaft |55 by a nut 255, exerting a forceagainst the driven member tending to hold it into engagement with thedriving member 252. With the rake head down in normal raking position,the clutch 25| is held out o f engagement, as shown in Figure 7, bymeans including an engaging lever 255 which is pivotally connected at25| to the cross bar |55. To disengage the clutch 25|, the engaginglever 255 is swung in a clockwise direction, as viewed in Figures 6 and7, causing the lower end of the lever to bear against a shoulder formedon the driven member 253. The driven member 253 is thus forced backagainst the pressure ofthe spring 254 until the teeth of both drivingand driven members run clear of each other. The engaging lever 255 isswung between engaged and disengaged positions, and locked in the latterposition, by a system of links including a bell crank 252, which ispivotally connected by a pivot bolt 253 to a lug formed by, one end of asmall cross piece 254 welded to the bar |54.

The forwardly extending arm 255 of the bell atively connected with thetwo laterally extending crank is connected by a link 255 to a triangularshaped toggle member 215 which is pivotally connected at 21| to theother end of the cross piece' 254. Another link 212 connects the togglemember 215 with the engaging lever 255 in such manner that the link 212and toggle member 215 form an over center lock in the disengagedposition, which effectively resists the pressure of the spring 254, asshown ln Figure 7. The bell crank 252 is swungrearwardly to break thetoggle lock and engage the clutch 25| by means of a trip rope 213 whichis secured to the outer end of the bell crank arm and passes rearwardlytherefrom through a pulley 214 fastened to the rear frame bar |55. Frompulley 214 the trip rope 213 passes forwardly through another pulley 215fastened to the upper end of a post 215 rising vertically from the endof beam |53, and thence forwardly to the tractor body to which itissecured within convenient reach of the operator.

'I'he locking lever 2|5'is disabled simultaneous with the engagement ofthe clutch 25I- by means of a trip cord 255 which is secured to the endof the locking lever 2I5 and passes downwardly and rearwardly therefromthrough a pulley 25| fastened to the frame bar |55 and thence forwardlyto a point somewhat ahead of pulley 215, where it is Joined. as by aclip 252, to the trip vbeam |66. the bell crank arm 262 near the outerend thererope 21a. Thus. spun on the tup rope 21a is also transmittedthrough the trip cord 289 .to the is'swung upwardly to dump.

- Disengagement of the clutch at the end of movement of the rake head iseffected by a throw-cut device including a tube 283 which is connectedat one end by a transverse pivot bolt 296 to a bracket 285 swiveled onthe rakehead A rod 280 is pivdtally connected to of, and is slidablydisposed within the tube 283 in telescopic relation, the lengths of tubeand rod being such that the end of the rod will not come out of the tubewhen the bell crank arm 262 lis in its extreme forward position. Anadjustable limit stop 290 isi-fixed to the rod 286n so that as the rakehead beam |56 reaches a predetermined posi-tion, the end of the tube 283will contact the limit stop 290, and further movement of the rake headand tube forwardly will push the rod 286 and bell crank arm 262forwardly. At the moment the clutch 25| is disengaged by the forwardswinging of the bell crank 262. the links 220 and 212 .pass over deadcenter, and the rake head |55 returns to raking position by gravity,

' leaving the bell crank and rod 286 locked in the forward, ordisengaged position. Likewise, as the rake head returns to rakingposition, the toggle members 205 Iand 2|0 straighten out and the lockinglever 2 i 9, urged forward by the spring 22|, hooks over the bolt 220 tolock the toggle down into position.

Another embodiment of the present invention is shown in Figure 9, inwhich a single section rake is used, although it is to be understoodthat either single section or multi-section structure might be usedinterchangeably with lthe several types of dumping mechanism. Thegeneral i ng embodiment, the clutch 293 is actuated by a bell crank 262eacting through a system of link-l framework as well as certain of theoperating units such as the toggle mechanism and clutch throwout deviceare similar to those described in the preceding embodiment andillustrated in Figures 5, 6, 77 and 8 in connection witheither of therake sections |50, i5! and therefore such similar parts have been givensimilar reference numerlaterally spaced brackets |`l0a extending rear-rwardly from -bar |5511, and is supported at opposite ends on carryingwheels ia. As in the preceding embodiment, the rake head |54a` is helddown into raking position by a toggle |99a, and is swung upwardly todump by means of a self-interrupting clutch 293 which is similar in.many respects to the clutch 25|. bodiment, however. 'the trip rope 2800for disabling the locking lever 2|6a is passed through a pulley 20m andthence forwardly to the tractor seat to which it is tied within easyreach of the opera-tor.

The principal'diiference between this and preceding embodiments,however, lies in the means employed to drive the clutch 293. Whereaspreceding embodiments derlved power for operating In this emthe dumpingmeans from the power takeoff shaft,

. the structure under consideration employs an operating connectionbetween the clutch 293 and engine driven power lift mechanism 294carried at the rear end of the tractor 20. The said power lift mechanismincludes a transverse rock shaft 295 projecting laterally beyond theends of, the power lift housing, and the usual control pedals 298. Alifting arm 300 having a hub 30| is xed to the end 'of the rock shaft295 in a manner -well known to those skilled `in the art.

The clutch 293 includes a transverse shaft 302 which is journaled in abearing sleeve 303 sultably supported on the member 29|.y The drivenclutch member 304 is journaled on the shaft 302 adjacent the end of thebearing sleeve. 303 and is provided with a crank ar-m 305 which isconnected by a link 202a to a bracket 204a rising from the rake headbeam |06a. The driving member 306 is slidably but non-rotatably mounted,as by splines, on the outer end of the shaft 302 and is provided with areel portion 3|0, the purpose of .which will be disclosed shortly,l Asin the precedage upon an engaging lever 26 0a which is brought to bearagainst ashoulder -provided on the driving member 906. In place of the-trip rope used previously to trip the bell crank, we have substituteda. rod 3H which is pivotally connected at SI2 to the bell crank 262a andextends forwardly therefrom to a. hand lever 3|3 swingably mounted onthe tractor within convenient reach of the operator. The forward end ofthe rod 3|| is likewise pivotally connected with the lever 3|3.

The dumping clutch 293 is driven from the power lift mechanism 294 bymeans of a rope Slt which is secured to the lifting varm 300 in anysui-table manner, passing rearwardly therefrom through a .pulley `SI5fastened to the shaf-t 29| adjacent the draft connection |85 and thencerearwardly lto the reel portion 3I0 ofthe clutch member 206, about whichthe rope 4is wrapped several .times to secure a frlctional grip. vTheend of the rope is then passed forwardly and fastened to one end of aspring BIB, the other end of which is hooked through an apertured lug320 provided on the'forward'portion of the adjacent strut 292.

The operation of the implement is as follows: With the rake head innormal raking position, the power lift arm 300 is in lits extremerearward position, and therope 3M is stretched tauft by the spring 3|9.As in the preceding embodiment, the bell crank arm 262e is in itsforward position, holding the clutch 293 ourl'l of engagement thpoughthe action of the toggle link members on the e lever 260m. Likewise, thetoggle members 205a, 2 0a are hel-d down in nearly aligned position bythe locking lever 2|6a.

To dump the rake, the operator first pulls the trip rope 22M to unlockthe toggle |9941, arr-dat the same time pulls the hand lever 343rearward- -1y to engage the 'clutch 293. He then depresses either orboth of the control pedals 296 to actuate the power lift mechanism androck the liftlng arm B00 forward-ly,A pulling the nope 3|4 with i-t. Thetightly wrapped rope causes the clutch driving member 306 torotate, andwith it the duiven member 304 and crank arm 305 thereby lifting the rakehead |54a. -Y 'Dhe spring 3|@ stretches as .the rope is pulledforwardly, resisting sufficiently to maintain the required tension ofthe rope on .the reel 9|0. As the rake head v and causing the rake headto drop back by gravity to raking position. Inasmuch as the operation ofdumping the rake is generally completed before the power lift am 330 hascompleted its full swing, the latter continues its forward movement idlyrotating .the disengaged'clutch member 306.

In the particular type of power lift illustrated,

, 2-9lb. Preferably. the pulley 346 is disposed dithe control pedals 296must be depressed a sec- Another embodiment of me present inventionfeaturing dumping means driven from the tractor power lift mechanism nshown in Figures 10, 11

and 12. In general, the structural framework of this embodiment is quitesimilar, with the exception of the dumping means, to that illustrated inFigure 9. and therefore such parts as have already been described havebeen given similar reference numerals with the suma 11.

Referring now to Figures lo, l1 and l2, the

dumping mechanism, indicated generally by reference numeral 322,comprises a transverse bearins sleeve 323 which is suitably fixed to thebeam 23|b intermediate bars |5512, i561), and iournaled therein is ashaft 324, both ends of which project beyond the ends of the bearing323. A sheave wheel 325 of relatively large diameter is fixed to one endof the shaft 323, while a spool-shaped reel 326 of muchsmaller diameteris fixed to the other end thereof. A dump rope 330 which is fastened atits rear end to a bracket 33| rising from the rake head beam I65b ispassed through the groove in the sheave -wheel 325 and securely fastenedto the wheel 325 in any suitable manner. Thus, when the wheel 325 isrotated in a clockwise direction, as

viewed in Figure 11, thel rake head |53b will be pulled up to dumpingposition by the dump rope 330. Immediately before the rope 336 begins toexert a, pull on the rake head beam, however, the toggle lock |99b isunlocked by means of a trip cord 28011 which is secured to4 the lockinglever 2|6b and passes downwardly and rearwardly therefrom through apulley 2Mb fastened to the frame bar ii56b and thence diagonallyforward. The end of the cord 286i) is fastened by a a hook 332 to a lug333 provided on the side of the sheave wheel .325 near the cuter rimthereof. The lengths of the dump rope 336 and trip cord 23th are suchthat the latter is stretched tight and begins to exert a pull on thelocking lever 2-|6b while the dump rope 336 is still slack, and thelatter is not stretched tight until after the locking lever 2|6b hasbeen pulled clear of the bolt 22|ib and the toggle lock |9917 isunlocked The dumping mechanism 322 is driven from the tmctor power lift294 by meam of a rope 334 which is secured at its front end by a hook335 to a lever arm 336 disposed at one end of the rock shatt 295 .andcomprising part of a selftripping device, indicated generally bythereference numeral 331. From this point, the rope 334 passes diagonallyrearward through a pulley 346 loosely fastened, as by a hook bolt 34|and lock nuits 342, to a bracket portion 366 of a supporting :rameaufixed to and rising from the aan reotly above the pivotal draftconnection |35 so thatt-he distance from lever arm 336 to pulley 360 todumping mechanism 322 remains substantially constant when the tractorturns rela.- tive Ato the rake. and the tendency of the rope to pull onthe dumping mechanism is minimized. The rear end of the rope 334 iswrapped several times around the reel 326 to secure a frictbnol grip,and is fastened to a spring 345 which, in turn, is hooked through anapertured lug 343 provided in the adjacent strut 292b.

The self-tripping device 331 comprises a hub 350 adapted to benon-rotatably mounted on the power lift rock shaft 295 and having aplate 35| in theshape of a sector fixed to the outer end I thereof. Ashaft 352 projects laterally outward from the face of the plate 35|coaxial with the rock shaft 295, and the lever arm 336 is journaledthereon. A compression spring 353 held by a. retaining washer 354 andnut 355 which is in threaded engagementwith the end 'of the shaft 352,bears against the lever arm 336 holding it against the plate 35|. 'Iheplate 35| is provided with an ear 356 projecting outwardly therefrom andnormally abutting against the back edge of the lever arm 336, as bestshown in Figure 11. A vertical bar 360 is bolted to the adjacentimplement mounting bosses 25 and' rises vertically thherefrom to a pointsomewhat above the rock shaft 295 where it is bent rearwardly, as at36|. Two rods 362, 363 are welded to the rearwardly bent portion 36| ofthe bar 366 in spaced relation and project laterally outward therefromslightly beyond the plane of the lever arm 333 to form limit stops forsaid arm. A plate 354 is Y welded to the underside of rod 363 in thepath oflever arm 336 and at an outwardly directed angle relative theretoso that as the sector 35| and lever arm 336 are rotated forwardly on therock shaft 295, the lever armA 336 will contact the plate 364 and bepushed outwardly thereby along the shaft 352 andagainst the pressure ofthe spring 353 until the lever arm 336 clears the ear 356. As soon asthe sector 35| and lever arm 336 are thus disconnected, the latter ispulled back against the rod 362 by the weightof the rake head |54bpulling on the rope 334, while the sector 35| continues its rotationwith the rockshaft 295 until the latter has reached its forward termlnalposition. As on the previous embodiment we have provided a bar 365welded to the hub 353 and suitably bent to miss the bar 366, whichcontacts and depresses the control pedal 293 during the last few degreesof rotation of the rock shaft 295, thereby actuating the power lift onceagain to return the rock shaft and sector to their original positions.I'he angular back side of the ear 356 acts as a cam surface to push thelever arm 336 outwardly along the shaft 352 as .the ear 353 slides underthe lever arm.

Figures 13, 14 and 15 illustrate a modified form of the previouslydescribed embodiment, in which the self-tripping device is mounted onthe implement shaft to facilitate connecting and disconnecting the rakefrom the tractor 26. Structural elements similar to those previouslydescribed are given the same reference numerals with the suffix c.

The vertical bar 360c of the self-tripping device 33'|c is xed, as bywelding, to the shaft 23|cdirectly behind the draft connection |33, andis braced by a strut 310 which extendsdownwardly and rearwardly from theupper portion oi the bar le to connect with the shaft 29|c. A pair ofbearing brackets 31| are fixed to the strut 310 on' opposite sidesthereof, and journaled in said brackets in position corresponding tothat taken i by the power lift rock shaft295 inl the precedingembodiment is a shaft 312. The sector 35|c is non-rotatably fixed on oneend of the shaft 312 and is provided with a lever arm 336e which isvjournaled on a shaft 352c and is urged against the sector by a spring353e. Another lever arm 313 is fixed to the other end of the shaft 312and between. gathering and dumping positions.

is extended downwardiy beyond the shaft 312 to l provide an extensionarm 385 to which a spring 344 is fastened, said spring being anchored tothe vertical bar 360e. A rope 314 is fastened to the upper'end of thelever arm 313 and' passed forwardly through a pulley 315, to be securedby a hook 316 to a lifting arm 311 fixed on the power lift rock shaft295. The pulley 315 is connected by a hook 380 and lock nuts 38| to abracket 332 which is fixed to the vertical bar 360e and extendsforwardly therefrom to a point above the pivotal action of the plate364e and is pulled back by the `weight of the rake head to its originalposition of rest against the stop 362e, while the lever arm 319 andsector 35|c continue rotating with the rock shaft 295 as the lattercompletes its full swing. As on the preceding embodiments, the powerlift 294 is automatically actuated again by a trip bar 383 which iswelded to the lifting arm 311 and depresses the control pedal 296 duringthe last few degrees of rotation of the rock shaft. The lifting arm. 311lis returned to'its original position by the action of the power liftmechanism, while the lever arm 313 and sector 35|c are pulled back totheir normal positions of rest vby the stretched spring 384.

While we have shown and described above a few of the structures in whichthe principles of the present invention have been embodied, it is I tobe understood that our invention is not to be limited to the specificdetails shownand described above, but that, in fact, widely differentmeans may be employed in the practice of the broader aspects of ourinvention.

What we claim, therefore, and desire to secure by Letters Patent is:

1. In combination with a tractor. a dump lrake i comprising a wheelsupported frame, a toothed rake head connected to saidV frame formovement between raking and dumping positions, draft means connectingsaid frame to the 'tractor Vfor vertical movement relative thereto,mechanism for dumping saidrake head com prising a continuously rotatingdrivingA member journaled on said frame and Amovable bodilv therewith,means for driving said continuously rotating member from the tractorengine, a nori mally stationary driven member journaled on said frame,means for connectingv said driven member with said driving member torotate therewith, operating connection between said driven member andsaid rake head Vfor moving the latter to dumping position when thedriven member is rotated, and means operable to disdumping means mountedon said frame and movable vertically therewith for swinging said rakehead between said gathering and dumping positions, and drivingconnection between .said power take-ofi` shaft and said dumping meansfor operating the latter.

tions, draft means connecting said rake" sec-' tions to said tractor forvertical m'ovement relative thereto, means for supporting the adjacentends of said rake sections comprising a wheel supported draft memberconnected to the tractor4 for vertical swinging movement and to whichsaid adjacent ends are swingably connected, and supporting wheelsjournaled at thevouter ends of said rake sections, for supporting saidconnected ends, and means for dumping each of said rake heads. l

4. In combination with a tractor, a dump rake comprising a generallytransverse draft frame connected to the tractor for vertical swingingmovement, a pair of laterally spaced rake sec,- tions connected to saiddraft frame, a longitudinally disposed wheel supported draft member 5.Incombination with a tractor, a dump rake comprising a plurality of rakesections, each inciuding a frame and a toothed rake head pivotallyconnected thereto for swinging between raking and dumping positions,draftmeans for connecting said rake sections to said tractor inlaterally spaced relation,` a transverse shaft journaled on vsaid draftmeans, said shaft having crank arms 'opposite each of said rakesections, link means connecting their respective crank arms with saidrake heads and operative to swing the latter between said raking anddumping position when the transverse shaft -is rotated, and means fortransmitting power from the tractor engine to drive said transverseshaft including a self-interrupting clutch in serial connectiontherewith.

6. In combination with a. tractor having a power take-off shaft, a dumprake comprising a pair of rake sections, each including va frame and atoothed rake head journaled thereon for swinging between raking anddumping positions,l a draft frame connecting said rake vsections toy therear of said tractor and transversely thereof, a countershaft journaledon said draft frame, power transmission means' connecting said power.take-off shaft with said countershaft'to drive the latter, and dumpingmeanscomprising a self-interrupting clutch mounted on each of saidframes, operatingconnection between each of said clutches and itsrespective rake head for swinging the latter between said raking anddumping position when the clutch is engaged,

driving means connecting said countershaft with each 'of said clutchesto operate the latter, and control means for engaging said clutches.

7. In combination with a tractor, a dump rake` ends of said rakesections to said secondary draft member.

8. In combination with a tractor, a dump rake comprising a pair of rakesections, each including a frame and a toothed rake head journaledthereon for swinging between raking and dumping positions, carryingwheels for supporting the outer ends of said rake sections, a draftframe for connecting said rake sections to the rear of said tractor andtransversely thereof, said draft frame comprising a transverse beamsupported on carrying wheels journaled at the ends thereof, means forconnecting said beam to the/ tractor body for vertical movement relativethereto, means for connecting each of saidrake sections to saidtransverse Ibeam, a secondary draft member comprising a beam swingablyconnected to said tractor body and` extending rearwardly therefrom, asupporting wheel journaled on said secondary draft member, means forflexibly connecting the inner ends of said rake sections to saidsecondary draft member, a normally rotating transverse countershaftjournaled on said transversebeam, means for driving said countershaftfrom the tractor engine, dumping means mounted on each of said rakesection frames and operatively connected with its respective rake headto swing the latter between said rakingand dumping positions, and meansfor driving said dumping means from said normally rotating countershaft.

9. In combination with a tractor having power lift mechanism including arotatable rock shaft, a dump rake comprising a frame and a toothed rakehead pivotally connected thereto for dumping, draft means connectingsaid frame to the tractor body, clutch mechanism comprising a drivingmember and va driven member, fboth rotatably supported on said frame,operating con- Anection between said clutch driven member and said rakehead for dumping the latter when the clutch is engaged. means connectedwith said power lift rock shaft for rotating said clutch driving membermeans for engaging said clutch. and means responsive to the movement ofsaid rake head relative to said frame past a predetermined position fordisengaging said clutch.

10. In combination with a tractor having power lift mechanism includinga rotatable rock shaft, a dump rake comprising a wheel supported frame,a toothed rake head supported. on said frame for swinging between rakingand dumping positions, draft means connecting said frame with saidtractor for vertical movement relative thereto` a rotatable dumpingmember journaled on said frame, and connected with said rake head forswinging the latter between said raking and dumping positions, flexiblefr'neans for transmitting energy from said `power lift rock shaft todrive said rotatable dumping member, andmeans vdisposed in serialconnection with said flexible means for interrupting the transmission of energy to said dumping member comprising arotatable driving memberconnected with said rock shaft, a rotatable driven member connected withsaid dumping member, means connecting said' driven member with saiddriving member to rotate therewith, and means operable to disconnectsaid driven member from said driving member when said rake head hasreached a predetermined position relative to said frame.

1l. In combination with a tractor having power lift mechanism includinga transverse rock shaft and control means for actuating said mechanism,-a dump. rake comprising a frame, a toothed rake head supported on. saidframe for swinging between raking and dumping positions, carryingwheels, draft means connecting said frame to the rear of said tractorand transversely thereof, toggle mechanism connected between said rakehead and said frame and operable to hold the rake head in rakingposition, and dumping means comprising a rotatable member journaled onsaid frame, means connecting said rotatable member with said rake headto swing the latter between said raking and dumping positions, meansoperatively connected with said rotatable member for unlocking'saidtoggle mechanism' tion of maximum lift for returning the rock shaft toits normal position of rest.

12. In combination with a tractor having a y pair of driving wheels andan additional driving member connected with the tractor engine fordelivering power to actuate implements associated with the tractor, adump rake comprising a wheel supported frame, a toothed rake headpivotally connected to said frame for vertical swinging between rakingand dumping positions, draft means connecting said frame to said tractorfor vertical movement relative thereto, clutch mechanism comprising arotatable driving member journaled on said frame, a normally stationarydriven member rotatably supported on the frame, and means for engagingsaid driven member with said driving member to rotate therewith, powertransmission mechanism for driving said clutch driving member from saidadditional driving member on the tractor@ dumping mechanism operativelyconnected .with said clutch driven member for swinging said rake head todumping position when the clutch is engaged. and means for automaticallydisengaging said clutch when the rake head has been dumped.

13. In combination with a tractor, a dump rake comprising a generallytransversely disposed wheel supported frame, a toothedfrake forconnecting said beam to the tractor body for vertical movement relativethereto, means for connecting each of said rake sections to saidtransverse beam, a. normally rotating transverse countershaft Journaledon said transverse beam, means for driving said countershaft from thetractor engine, dumping means mounted on each of said rake sectionframes and operatively connected with its respective'rake head to swingthe latter between said raking and dumping positions, and means fordriving said dumping means from said normally rotating countershaft. 4

l5. In a dump rake having a frame and a toothed rake head swingablyconnected thereto for dumping, a power operated clutch driving memberjournaled on said frame; a clutch driven member rotatably supported onthe frame and adapted to engage with said driving member to rotatetherewith, means connecting said clutch naled on said frame and havingoperating connection with-said rake head for dumping the latter, laflexible member trained over said rotatable member in driving connectiontherewith, and means operatively connecting said flexible memyber withsaid rock shaft on the tractor whereby rotation of said rock shaftactuates said rotatable member to dump said rake head.

18. In combination with a v tractor having a power lift device includinga rock shaft connected with the tractor engine for rotation through apredetermined angle when said power lift is actuated, a dump rakecomprising a frame and a rake head swingably connected thereto fordumping,A a shaft journaled on `said frame for rotation and havingoperating connection with said rake head for dumping the latter when theshaft is rotated, a reel portion on said shaft, a

rope wrapped around said reel portion for frictionaldriving engagementtherewith, means operatively. connecting one end of said rope with saidpower liftrock shaft whereby rotation of the rock shaft causes a pulltobe exerted on the rope, thereby lrotating said shaft and dumping saidrake head, and yielding means connected with the other end of said ropefor holddriven member with said rake head for dumping the latter whenthe clutch members are engaged, a lever arm pivoted on said rake frameand operable to engage and disengage said clutch members, a pair oftelescoping members pivotally connected with said rake head and saidlever arm, respectively, and limit stop means on one of said telescopingmembers adapted to engage the'other ing the rope taut.

19. In combination with a tractor having a power lift device including arock `shaft connected with the tractorengine for rotation telescopingmember when said rake head has'- reached a predetermined positionrelative to said frame whereby further swinging movement of the rakehead causes said telescoping members to move said lever arm and therebydisengage said clutch.

16. In combination with a tractor having a rotatable driving memberconnected with the tractor engine for delivering power to actuateimplements'associated with the tractor, a dump rake comprising a frame,draft means connecting the frameA to said tractor, a toothed rake headswingably connected with said frame for dump'- ing, a clutch drivingmember journaled on said frame, power transmission means connecting therotatable driving member on the tractor with said clutch driving member,a clutch driven member rotatably supported on the frame and adapted toengage with said driving-member to rotate therewith, means connectingsaid clutch driven member with said rake head for dumping the latterwhen the clutch members are engaged, a lever arm pivoted on said rakeframe and operable to engage and disengage said clutch members, a pairof telescoping members pivotally connected with said rake head and saidlever.

' the rope to pull the rake head up to dumping through a predeterminedangle when said power lift is actuated, a dum'p rake comprising a frameand `a rake head swingably connected thereto for dumping, a shaftiournaled on said framefor rotation, a sheave wheel of relatively largediameter anda. reel portion of relatively small diameter, both fixed onsaid shaft, a rope fastened to and trained over said sheave wheel, saidrope being secured to said rake head in such manner that rotation ofsaid sheave wheel causes position, a secind rope wrapped around saidreel portion for frictional driving engagement therewith, meansoperatively connecting one end of said second rope with said power liftrock shaft whereby rotation of the rock shaft causes a pull to beexerted on the rope, thereby rotating said shaft and dumping said rakehead, and spring means connected to the other end of said second ropeand anchored to said frame for holding the rope taut.

20. For usewith a tractor having a rotatable driving shaft connectedwith the tractor engine for delivering power to actuate implementsassociated with the tractor, a dump rake comprising a frame Vand a rakehead swingably connected therewith for dumping, means on said frame: fordumping said rake head, a rotatable driving member operatively connectedwith the driving shaft on the tractor, a driven member journaled forrotation-relativev'to said driving member and coaxial therewith, saiddriven member being operatively connected with said dumping means, aprojecting ear on said driving member adapted to engage said drivenmember and cause it to rotate therewith, and an inclinedmember-positioned in .the path of said driven member. and adapted tovforce said driving and driven members apart to disengage the drivenmember from the ear on said driving member.

21. For use with a tractor having a rotatable driving shaft connectedwith the tractor engine for delivering power to actuate implementsasthereto for dumping, a rotatable member jonring a frame and a rakeheadswingably connected therewith for dumping, means on said frame fordumping said rake head, flexible pull transmitting means connecting saiddriving shaft on the tractor with said dumping means for actuating thelatter, and an interrupting device in serial connection with said'flexible means, said interrupting device comprising a rotatable drivingmember, a driven member journaled for rotation relative to said drivingmember vand coaxial therewith, a projecting ear on said driving memberadapted to engage said driven member and cause it to rotate therewith,and an inclined member positioned in the path of said driven member andadapted to force said driving and driven members apart to disengage thedriven member from the ear on said driving member.

22. The combination with a tractor having a rotatable engine drivenmember for transmitting power to implements associated with the tractor,of a dump rake comprising a frame and a rake head connected therewithfor movement between raking and dumping positions, a rotatable wheeljournaled on said frame, a flexible pull transmitting member connectedwith said rake head and trained over said wheel in driving engage- 'menttherewith, and means operatively connected with said rotatable enginedriven member for rotating said wheel to pull the rake head up todumping position.

member for releasing said locking means prior to dumping the rake head.

27. In combination with a tractor, a dump rake comprising a plurality oflaterally spaced wheel supported rake sections, each including a frameand a toothed rake head journaled thereon for swinging betwen raking anddumping positions, a draft frame connecting said sections to saidtractor for relative vertical movement, a transverse countershaftjournaled on said draft frame, means `for driving said countershaft fromthe tractor engine, dumping means mounted on each 23. A tractorpropelled dump rake comprising a wheel supported frame connected withthe tractor for relative vertical movement., a rake head pivoted on saidframe for swinging between raking and dumping positions, a rotatablemember journaled on said frame and movable bodily therewith, meansconnecting said member withl said rake head for dumping the latter whensaid member is rotated, and means for intermittently transmitting powerfrom the tractor engine to the rotatable member to drive the latter. y24. In combination with a tractor, a dump rake comprising a wheelsupported draft frame connected with the ltractor for relative verticalmovement, a pair of laterally spaced rake sections connected with saiddraft frame and movable vertically therewith, supporting wheelsjournaled on the outer ends of said sections, and ground engaging meansflexibly joining the adjacent ends of said sections together.V

25. In combination with a tractor having power lift mechanism includingan engine driven rockof said rake section frames and operativelyconnected with its respective rake head for swinging the latter betweenraking and dumping positions, and means for driving said dumping meansfrom said countershaft.

28. In a tractor drawn dump rake, the combination of a frame having arake head pivotally connected therewith for swinging between raking anddumping positions, a pair of vtoggle links connecting said frame withsaid rake head and movable between an extended position wherein saidtoggle links hold the rake head down to raking position and a closedposition, a locking lever pivoted on said frame and engageable with saidtoggle links for holding the, same in extended position, power operateddumping means connected with said rake head ior swinging the same up todumping position, and means actuated by said dumping means fordisengaging said locking lever from said toggle links to permit thelatter to close, said dumping means thereafter swinging said rake headup .to dumping position.

29. -In combination with a tractor, a dump rake comprising a pairoflaterally spaced rake sections connected to said tractor for relativevertical movement, each of said sections having a toothed rake headswingable between raking and dumping positions, a. transverselydisposed,

normally stationary shaft journaled on said secand cam means on theshaft operative lto disenshaft, a dump rake comprising a supportingframehaving draft connection with the tractor. a toothed rake headvpivoted onsaid frame for vertical swinging between raking and dumping positions,tension vmeans connecting said rock shaft with said rake head andoperative to swing the latter to dumping position when said rock shaftis lrocked, and means in serial connection with said tension means forinterrupting the transmission of power to said rake head when thevlatter has reached dumping position,

26. A tractor propelled dump rake-comprising a frame having a rake headpivotally connected therewith` for swinging between raking and dumpingpositions, a rotatable dumping member journaled on said frame and havingoperating connection with the rake head for dumping the same, means fordriving said dumping member from the tractor engine, locking meansconnected with said frame and with said rake head for holding the latterdown to raking position, and

gage said clutclr when the shaft has turned through a predeterminedangle.

30. In combination with a tractor, a dump rake comprising a frame, arake head supported on said frame for vertical movement between rakingand dumping positions, a normally rotating member having drivingconnection with the tractorengine, a normally stationary memberjournaled on the rake frame and connected with the rake head for raisingand lowering the same, a clutch operative to engage said normallystationary member with said normally rotating member so as to rotatetherewith, an arm pivoted on the frame and connected with the clutch forvengaging and disengaging the same, optionally controllable means formoving said arm so as to engage the clutch, and means `ior moving saidarm to disengage the clutch when the rake head has reached dumpingposition.

31. In combination with a tractor having a rock shaft,` engine drivenmechanism operative to rock said shaft alternately in oppositedirections, and control means for actuating said mechanism, a dump rakecomprising a frame, a toothed rake head 'supported on said frame forrelative vertical movement between raking means responsive to movementof 'said dumplhs 75 and dumping positions, means' connecting said rockshaft with said rake head and-operative to move the latter to dumpingposition when the rock shaft is rocked in vone direction, and meansresponsive to rotation ot said rock shaft through a predeterminedangular extent for actuating said control means to reverse the directionof rotation oivsaid rock shaft and return the shaft to its initialposition.

32. -In a dump rake having a trame, a rake. head supported on said framefor movement be- 10 tween dumping and raking positions, and a dumpingmember connected with said rake head for moving the same to dumpingposition, locking means connected with said frame and with said rakehead fox' holding the latter down to raking position, and meansresponsive to initial movement oi' said dumping member for releasingsaid locking means prior to dumping the rake head.

WILBUR J. COULTAS. NOLAN D- COLVlN.

UERTIFICATE OF CORREC'II 0N. Patent No. 2,257,280. j April 1, 191,1.

wILBUR J. cogLTAs, ET AL. A

It is hereby certified that error-:I'ppears in the printed specificationof the above numbered patent r equiring correction as follows: Page 7,second column, linee 28, 29, and O, strike out the comme. and words f'for supporting said connected ende, and means for dumping each of saidrake heads"; page 8, first column, line 7, claim 7, after' "tractor" andbefore the comma, insert for relative vertical movement-; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office. A

signed and sealed this 15th day of'may, A. D. 19in.

Henry Van Arsdale,

'(Seal) Acting Commissioner of Patents.

